/Engine/Source/Runtime/RHI/Public/RHICommandList.h
void MultiDrawIndexedPrimitiveIndirect ( [FRHIBuffer](API\Runtime\RHI\FRHIBuffer) * IndexBuffer, [FRHIBuffer](API\Runtime\RHI\FRHIBuffer) * ArgumentsBuffer, uint32 ArgumentOffset, [FRHIBuffer](API\Runtime\RHI\FRHIBuffer) * CountBuffer, uint32 CountBufferOffset, uint32 MaxDrawArguments )